Yusuke Urameshi is not your typical angelic figure. To some, he's even considered devilish. However, his noble act of saving a child led to an unfortunate accident that resulted in him being transported to the Spirit World. Yusuke's name was not listed in the Book of Enma, which meant it was a mistake. As a result, he was given a chance to return to the living world through a series of tests, but not before becoming a spiritual detective. Yusuke is now a half-dead, half-alive agent working for Koenma, who happens to be the son of the Spirit World's ruler. However, this position has its setbacks, especially when he's forced to interrupt his summer vacation to save Koenma after he was kidnapped! In order to save Koenma, Yusuke must find and trade the Golden Seal of King Enma. Chaos in the Spirit World would ensue if someone other than King Enma possessed the seal. What's a half-dead spirit detective to do? With the help of his trusted allies, Yusuke sets out to Magma Valley to save the person who saved his life while uncovering the mastermind behind the evil conspiracy.